Computing-scale.



0. P. CHRISTOPHER.

COMPUTING SCALE.

APPLICATION TILED FEB.25, 1911.

Patented Oct. 17, 1911.

2 SHEETS-SHEET 1.

Inventor Attorneys w W? l ZQMW uw n m m J/WMW l aw m w 4 3 7MHW 3 j! 6%A, 68M I w fi/J 2 J 7 7 \8 COLUMBIA PLANDGRAPH CO-pWASHlNQ'I'ON. D- C.

0. P. CHRISTOPHER.

COMPUTING SCALE.

' APPLICATION FILED IEB.25, 1911. 1,006,062.

Patented Oct. 17, 1911.

2 SHEETSSHEET 2.

10" [7 x0 Z f xi 0 1a m Inventor by i r Attorneys C0 WASHINGTON D cUNITED STATES PATENT oEEIoE:

CALVIN IE. CHRISTOPHER, 0F ASHEVILLE, NORTH CAROLINA.

COMPUTING-SCALE.

To all whom it may concern:

Be it known that I, CALVIN F. CHRIsTo- PHER, a citizen of the UnitedStates, residing at Asheville, in the county of Buncombe and State ofNorth Carolina, have invented a new and useful Computing-Scale, of whichthe following is a specification.

This invention relates to computing scales of that type particularlydesigned for use upon counters, one of the objects of the inventionbeing to provide simple and compact mechanism under the control of thebalance mechanism whereby the price of the weighed material can bequickly ascertained.

Another object is to provide a novel form of spring balance having meanswhereby it can be readily adjusted.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without de arting from the spirit of theinvention.

11 the accompanying drawings, the preferred forms of the invention havebeen shown.

In said drawings Figure 1 is a view partly in elevation and partly insection of the complete scale. Fig. 2 is a view partly in plan andpartly in section thereof. Fig. 3 is a transverse section on the lineA-B Fig. 1. Fig. 4: is a perspective view of the rolls of the computingmechanism and showing modified means for actuating them.

Referring to the figures by characters of reference 1 designates acasing constituting the base of the scale, said casing having anupstanding portion 2 at one end to which a door 3 may be hinged, thisdoor carrying a clock 41. By mounting the clock in this manner, the dialthereof can be held flush with the door, the clock mechanism projectinginto the extension 2 and only being accessible after the door 3 has beenopened.

A hollow standard 5 is mounted on the extension 2 and supports a dialcase 6. This case has two oppositely disposed dials 7 arranged thereinand an arbor 8 is journaled within the dials and has an index finger 9at each end thereof. These fingers are designed to co'ciperate with therespective dials Specification of Letters Patent.

Application filed February 25, 1911.

Patented Oct. 1'7, 1911.

Serial No. 610,676.

for the purpose of indicating the weight. The dials can of course beprotected by plates 10 of glass or other transparent material secured inthe case 6. A gear 11 is secured to the arbor at a point between thedials and is constantly engaged by a rack bar 12 extending downwardlythrough the hollow standard 5. This rack bar is pivotally connected toan arm 13 mounted to work upwardly and downwardly within a slot 14formed in the extension 2. Said arm is fixcross head 18 slidably mountedwithin the H casing 1. Parallel links 19 are pivotally connected to eachside of the cross head and also to upstanding posts 20 secured withinthe casing 1, the cross head, posts and links thus formingparallelograms whereby the cross head is maintained constantly verticalduring its up and down movements within the casing. A finger 21 projectsfrom the cross head and has a spring 22 connected to it, one end of thisspring being attached to an adjusting screw 23 slidably mounted withinthe top of easing 1 and engaged by an adjusting nut 2A which bearsdownwardly on said casing. It will be apparent that by means of thisadjusting nut, the mechanism of the scales can be shifted so as to bringthe index fingers into position at the zero points on the dials.

Casing 1 has a box-like extension 25 provided, in upper face, withparallel slots 26 and 27. These slots may be enlarged at one end, asindicated at 28 and 29 respectively. A row of numerals is located on thetop of the extension 25 and adjacent the slot 26,

these numerals indicating the price per pound of the material to beweighed. These numerals have been indicated at 30 in Fig. 2 and areseparated by parallel lines.

J ournaled within the extension 25 and beseries of numerals, indicatedat 32, for indicating the number of pounds, each of these numerals beingin alinement with those numerals on the cylinder designating the totalprice, at a given price per pound, of the number of pounds designated bysaid numeral. For example, the numeral 8 indicates 8 pounds, the numeral32 adjoining the same at the right indicates that 8 pounds at 4 cents apound equals 32 cents, the price of '8 pounds at 5 cents per poundequals 40 cents, etc. Another cylinder 33 is journaled in the extension25 and below the slot 26, this cylinder having an annular series ofnumerals at one end ranging from 1 to 15 successively and each of saidnumerals being located at the left of a longitudinal row of numerals,the numerals of the several rows being arranged in annular series. Thefirst mentioned annular series of numerals on the cylinder 33 indicatesounces while the remaining numerals on said cylinder indicate the pricesto be paid for the number of pounds indicated, at the price per pounddesignated by the numerals 30. For example, if the price per pound is 4cents the price charged for 4 ounces will be 1 cent, as indicated byreferring to the numeral op posite 4 ounces on cylinder 33 and aliningwith the numeral 4 in the series 30.

Cylinder 33 has a gear 34 revoluble therewith and this gear receivesmotion, through one or more gears 36, from a rack bar 37 secured to thecross head 18. The mechanism is so proportioned that when the platform15 is depressed a suflicient distance to move the index fingers from theZero gradu- I ations to the one pound graduations, the cylinder 33 willbe given one complete revolution thus bringing into view, successivelythe longitudinally extending series of numerals on said cylinder so thatthey will indicate the price of ounces from one to sixteen successivelyat the price per pound indicated by the numerals 30. Upon the completionof the first rotation of cylinder 33, a projection 34, which is carriedby gear 35, moves into engagement with one of a series of projections 39on a wheel 40 which rotates with cylinder 31, thus rotating said wheelone point so as to bring into view the longitudinally extending seriesof numerals designating the price to be charged for one pound at thedifferent prices per pound indicated by the numerals 30. Should morethan one pound be indicated by the scales, the two cylinders will beactuated in the manner hereinbefore set forth so as to accuratelyindicate, through the slots 26 and 27 the price to be charged for thenumber of pounds indicated and the price to be charged for the number ofounces in excess of the said pounds. For example, if the scales indicateseven pound-s and eight ounces the numeral 7 will appear at the extremeleft of the slot 26 and the numeral 8 will appear at the extreme of theslot 27. If the material is to be sold at 4 cents a pound, the operator,by looking at the numerals appearing in slots 26 and 27 directly underthe numeral 4 in the series 30, will find that the numerals 28 and 2appear in said slots and by adding the two together the total price tobe charged for the material weighed, can be readily obtained.

It is to be understood that, if preferred, the mechanism fortransmitting motion from the scale platform to the cylinders can bedispensed with and each of said cylinders can be provided with a knob 41whereby it can be rotated by hand.

What is claimed is 1. Scales including a casing constituting a base, adial supported thereabove, an index finger cooperating with the dial, arack bar, a gear revoluble with the finger and engaged by the rack bar,a spring supported platform, a connection between said platform and therack bar, computing mechanism, and means for transmitting motion to saidmechanism from the platform.

2. Scales including a base constituting a casing, oppositely disposeddialssupported above the casing, an arbor journaled there in, indexfingers connected with the end portions of the arbor and cooperatingwith the respective dials, a gear secured to the arbor and between thedials, a rack bar meshing with the gear, a platform, a connectionbetween said platform and the rack bar, adjustable elastic means fornormally holding the platform in a predetermined position, computingmechanism, and means operated by the platform for actuating saidmechanism.

3. The combination with a base constituting a casing, a yieldinglysupported platform, and weight indicating mechanism operated by theplatform, of a cylinder mounted for rotation and having numerals thereonindicating ounces and the price for an indicated number of ounces at agiven price per ounce, means operated by the platform for rotating saidcylinder, a second cylinder having numerals thereon for indicatingpounds and the total price of an indicated number of pounds at a givenprice per pound, and means operated by the first mentioned cylinder foractuating the pound in dicating cylinder.

4. The combination with a platform, weight indicating mechanism actuatedthereby, and adjustable elastic means for holding the platform normallyin a predetermined position, of a rack movable with the platform,gearing actuated thereby, a cylinder movable with said gearing, saidcylinder having annular series of numerals thereon indicating the totalprice at a given price per pound, of a predetermined number of ounces, asecond cylinder having annular series of numerals thereon for indicatingthe my oWn I have hereto aifixed my signature total prlce, at a glvenprlce per pound, 0t 1n the presence of two wltnesses.

any number of pounds indicated by the Weight indicating mechanism, andmeans CALVIN CHRISTOPHER 5 for transmitting motion from the first men-Witnesses:

tioned cylinder to the other cylinder. DAVID KIMBERLY, In testimony thatI claim the foregoing as J. D. PENLAND.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

